Chain geae case for cycles



4 Sheets-Sheet 1.

( No Model.)

Rm. HALL. GHAINGEAR CASE FOR CYCLES.

Patnted Jan. 21, 1896.

mvENToR v (No Model.) 4 Sheats-Sheet 2.

R. P. HALL. CHAIN GEAR CASE FOR GYGLES.

Patented Jan. 21, 1896.

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4 sheets-sheet a.

(No Model.)

R P HALL. v GHAIN GEAR CASE POR'GYGLES'.

Patented Jan. 21, 1896.

wn'hasss AN DREW EGRANAM. PHOTOUI'KOWAEKINGWN. DC

UNITED STATES PATENT OFFICE.

' ROBERT FREDERICK HALL, OF BIRMINGHAM, ENGLAND.

CHAIN-GEAR CASE FOR CYCLES.

SPECIFICATION forming part of Letters Patent No. 553,461, dated January 21, 1896.

Application filed September 5, 1895. Serial No. 561,554. (No model.) Patented in England May 7, 1895, No. 9,001.

To all whom it may concern.-

Be it known that I. ROBERT FREDERICK HALL, managing director of the Cycle Components Manufacturing Company, Limited,

and a subject of the Queen of Great Britain, residing at Ferndale, Church Road, Moseley, in the city of Birmingham, England, have invented a certain new and useful ChainGear Case for Cycles; and I do hereby declare the IO following to be a full, clear, and exact description of the invention, reference being had to the accompanying drawings, which form part of this specification, and for which said invention I have obtained Letters Patent I 5 of Great Britain, dated the 7th day of May,

1895, and numbered 9,001.

This invention has relation to detachable and oil-containing gear-cases for cycles, and has for one of its objects a simple means of attachedly connecting the said gear-case to that stay of the back-forks coming on the chain -wheel side of the machine; for another object the making of the joints of the case oil-tight, and for a further object so building or making the foundation-framing to which the divided sections of the casing are attachedly connected that when fitted the same are perfectly rigid and noiseless.

Figure 1 of the accompanying drawings 0 represents a front elevation of a fitted detachable and segmental chain-gear case constructed, arranged, and provided with improvements made according to my invention. Fig. 2 represents a back elevation of the 5 same. Fig. 3 represents the principal component parts of the said gear'case separated, showing the organization of the foundationstrip, which is itself made sectional with the sections united at the middle. Fig. at repre- 0 sents an edge view of the bottom part of the case, with the foundation-strip in elevation. Fig. 5 represents a vertical cross-section of the case upon the dotted line .90, Fig. 1. Fig. 6 is a vertical cross-section of Fig. 1 upon the 5 dotted line 00. Fig. 7 represents alike crosssection as Fig. 6, but with the halves of the case separated and removed from the foundation-strip. This case or cover, which forms an oil-bath for the chain and chain-wheel to run within, is separated from the foundationstrip secured to the chain-wheel-side member of the back forks. Fig. 8 represents a crosssection of the case upon the dotted line m Fig. 1, showing how the supporting-stay of the case comes exteriorly of the casing, instead of interiorly, as heretofore. Fig. 9 represents a section upon the dotted line 00 Fig. 1, while Fig. 10 is a cross-section of Fig. 1 upon the dotted line 02 Fig. 1, which view is alike unto Fig. 8, but shows the stay running out through the left-hand side of the case. Fig. 11 is an enlarged sectional view of a grooved edging part of the casing. Fig. 12 is a top side plan of the foundation-strip in position upon the carryingstay, and Fig. 13 is a longitudinal section of the same. Fig. 14: represents the component parts of the foundation-strip separated from each other and from the stay. Fig. 15 is a section of the rear portion of the strip upon the dotted line Fig. 14:, and Fig. 16 is a like section of the forward part of the strip upon the dotted line as, Fig. 14, showing the set-back troughed character of the strip.

The same letters of reference indicate corresponding parts in the several figures of the d rawin gs.

The gear-case is made of two fitted together horizontal sections or halves (t a with the opposed or meeting edges (1' of the forward part of the front of one section, which is tongued, taking into the presented grooved edges a of the forward front part of the other section, and with the like tongued edges a of the after part of the back of one section engaging with the opposed grooved edge a of the after part of the back of the other section, the inner parts a of the grooves at both back and front extending higher than the front edges of the said grooves, which are each made from a single strip of metal folded upon itself, as best seen in Fig. 11. The front sides of the after parts of the sections of the said two-part case have clearances (L10, which, when the sections are brought together, form a longitudinal gap a extending throughout about one-half of the entire length of the ease, with the top and bottom edges a a" being grooved, into which the opposite tongue-flanges b of the after part b of a foundation strip b, whose fore part is marked b take, so as to make an oiltight joint between the said parts. The back sides of the front parts of the said sections also have like clearances a, which form a longitudinal gap extending through a larger part of the middle of the said front of the casing, and. having the top and bottom grooved edges a a, to take upon the tongue flanges b of the said fore part b of the foundation-strip b. The bottom bracket chainwheel end of the foundation-strip has a hatshaped boss 12 with the circular flange b onto which the grooves 64 a of corresponding semicircular gaps a, formed in each half of the sections, take, while the extreme front ends of both sides and also the front side of the rear end of the said sections are furnished with groove-and-tenon joints (1 a.

The foundation-strip b is built up of longitudinal halves Z) 17 each having troughed or set-back channels If b presented in opposite directions and running in the same axial lines and with their opposed ends fitted with stepped junctions b b interlocking with one another, and each being seinicircularly and coincidently gapped they form a complete circular opening I), wherethrough the oblique stay 0 on the chain-wheel side of the back forks 0 passes when lying within the channels, but outside the casing.

The sections of the junction-piece of the foundation-strip are united togetherbysmall screws 6 while the middles of the sections of the casing are secured to the foundationstrip, through the medium of the said junction, by small screws cl, passing through the sides of the casing and into the solid metal of the junction. The case atits bottom bracket end is further secured to the stay by an adjustable band-clip 6, attached to the back of the forward half of the foundation-strip and drawn around the stay 0 by a screw-pin e. The fore part of the stay terminates in abottom bracket 6 having front and seat-rod framing members 6 a directed from it and carrying a pedal-axle 6 carrying a chainwheel 6 for driving a chain f, communicating motion to the chain rear wheel g, secured on the hub g of the back wheel. The back of the case,adjacent to the said hub,is fitted with I desire to claim and secure by Letters Pat,

ent is 1. In chain-gear cases for cycles, the combination with sectional halves of the case, of a two-part foundation strip, with the sections inversely troughed and disposed in the same axial line and with their opposed ends united together by semi-circularly gapped junction ends, substantially as and for the purpose described and set forth.

2. In chain-gear cases for cycles, the combination with sectional halves of the case, united together by groove and tongue joints, of a two-part foundation strip, w iose sections are inversely troughed and disposed in the same axial line and have their opposed ends united together by semi-circularly gapped and stepped junction pieces secured to one another, and the sections of the case to them, by screws, substantially as described and set forth.

3. In chain-gear cases for cycles, the com bination with the sectional halves of the case and with a framing stay, of afoundation strip built up of longitudinal halves each having troughed, or set-back channels presented in opposite directions and running invthe same axial lines, their opposed ends fitted with stepped, interlocking junctions, each being semi-circularly and coincidently gapped to form a complete circular opening for the oblique stay on the chain-wheel side of the back forks, substantially as described.

In testimony that I claim the foregoing I have hereunto set my hand this 31st day of July, 1895.

ROBERT FREDERICK HALL.

Witnesses:

HENRY SKERRETT, ARTHUR T. SADLER. 

